Brazil, whose next game is against Colombia next week, thumped Iraq 6-0 and Japan 4-0 yet rose only one place in the controversial table, from a record low 14th to 13th.
Despite winning most of their games, the 2014 World Cup hosts, who qualify automatically for the tournament, have been slipping steadily down the table over the last year as they have only been playing friendlies which carry less weight in the complex system.
Mano Menezes's side have played 19 games since the Copa America last year, winning 15.
South American champions Uruguay's dramatic loss of form cost them a place in the top 10 as they slipped from seventh to 11th.
Argentina's wins over Uruguay and Chile helped them into third place as they swapped places with Portugal.
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